<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>aa</title>
   <style>
   </style>
   <script>
   window.onload=function(){
       var oDiv=document.getElementById("div1");
       oDiv.onmouseover=function(){
	       oDiv.innerHTML="Thank you";
	   };
	   oDiv.onmouseout=function(){
	      oDiv.innerHTML="撒旦撒旦";
	   }
   
   };
   </script>
</head>
<body>
    <div id="div1" style="background-color:#D94A38;width:120px;height:20px;padding:40px;">Mouse Over Me</div>

</body>
</html>